YSI pHotoFlex Series - Manual (Page 55)

55 ba76126e01 03/2013
Note: Before using the test with your photometer for the first time, determine the reagent blank
value.
YSI model no.: PO4-3 TC
Category: KT (reaction cell test)
Cell: 16 mm
Measuring range: 0.06 - 3.50 mg/l PO
4
0.020 - 1.141 mg/l PO
4
-P
Display in mmol/l possible
Pipette 5.0 ml of sample
into a reaction cell. Add the contents of a
VARIO Potassium
Persulfate F10 powder
pack and close the cell
with the screw cap. Shake the cell vigorously
to dissolve solids. Heat the cell in the
thermoreactor for 30
minutes at 120 °C. Remove the cell from the
thermoreactor and let it
cool down in a cell rack.
With a pipette add 2.0 ml
of 1.54 N sodium
hydroxide solution, close
the cell with the screw
cap and mix the contents
by carefully swaying the
cell. Add the contents of a
VARIO Phos 3 F10
powder pack and close
the cell with the screw
cap. To dissolve solids, shake
the cell for approx. 10 to
15 seconds. A small
amount of solids may
remain undissolved. Allow to react for 2
minutes. Insert the cell in the
photometer cell shaft
and start measurement.
Notes:
• We recommend to determine a new reagent blank value (deionized water instead of sample) for each test package started.
2:00
Phosphate, total
Program no.
316
*RN316*